Front Crankshaft Seal: Service and Repair

Crankshaft oil seal (belt pulley end), replacing





Special tools and equipment
^ 3203 Oil seal extractor
^ 3415 Counterhold tool
^ T10053 Assembly device
^ V.A.G 1331 Torque wrench (5 to 50 Nm)
^ V.A.G 1 332 Torque wrench (40 to 200 Nm)

Removing
- Removing ribbed belt and tensioning element.
- Remove toothed belt.





- Remove crankshaft toothed belt sprocket. To remove crankshaft, counter-hold sprocket with 3415.





- To guide seal extractor, screw center bolt into crankshaft onto stop by hand.
- Unscrew inner part of oil seal extractor 3203 nine turns (approx. 20 mm) out of the outer part and lock with knurled screw.





- Lubricate threaded head of oil seal extractor 3203, place it in position and exerting firm pressure screw it as far as possible into oil seal.
- Loosen knurled screw and turn inner part against crankshaft until the oil seal is pulled out.

Installing

Note: Gradual introduction of PTFE oil seal (identifying characteristics: no annular spring, sealing lip wider). The sealing lip of this oil ring must not be oiled or lubricated. A plain encased seal of older construction (with annular spring) may be replaced with a PTFE oil seal, but not vice versa.

- Before installing, remove oil remains from crankshaft journal with a clean cloth.





- Install guide sleeve T10053/1 onto crankshaft journal.
- Slide oil seal over guide sleeve onto crankshaft stub.





- Press in oil seal onto stop using press sleeve T10053 and bolt T10053/2 (M16x 1.5x60).





- Install crankshaft toothed belt sprocket and hold with counter-hold tool 3415.
- Tighten center bolt to 90 Nm and turn 90° (1/4 turn) further (turning further can be done in several stages).

Note: Thread and shoulder must be free of oil and grease.

- Installing toothed belt and adjusting valve timing.
- Installing ribbed belt and tensioning element.